The MAGNIFY NITRO has the thickest piece of nitro in the entire line. Simply put, you get MORE of the good stuff! This soft and comfortable model is ideal for long wearing comfort. A premium mesh upper combined with a 3D molded heel hugs the foot in all the right places while remaining breathable. Despite the enhanced cushioning provided by premium NITRO foam, this shoe remains lightweight, including a PROFOAMLITE layer on the bottom. PUMAGRIP provides good grip on various surfaces. The MAGNIFY NITRO is the perfect choice for your next run over any distance where comfort is paramount. Midsole NITROAdvanced technology for superior responsiveness and cushioning in a lightweight package. PROFOAMLITLightweight, high rebound EVA that provides instant cushioning and durability HEEL SPOILER Visibility through reflectivity and stability through proprioception thanks to the TPU heel piece Outsole PUMAGRIP RUBBER Durable rubber compound that provides traction on a variety of surfaces RUBBER POSITION A generous amount of rubber provides durability for long miles and a central decoupling line that works for every step Upper FIT & MATERIAL. Uses the linear last developed based on biomechanical research, executed on a premium engineered mesh upper. HEEL FIT A rolled collar with "cat tongue" materials, plenty of cushioning keeps a firm grip on the foot during every run.